Sample Collection
Modern glucose monitors require only a small sample of blood to effectively measure glucose levels. Glucose levels are screened multiple times a day and even during the night for some users.
The sample is obtained by piercing the skin with a sterile item allowing blood to flow to the surface. Some glucose meters come with a specially made lance. A test strip specific to the glucose monitor is inserted into the monitor then applied to the blood sample. It is important to use test strips specific to the glucose monitor to ensure an accurate reading. Before testing, it may be necessary to calibrate or code the meter to ensure the machine is prepared to read the specific test strips. This process is simple and only requires that you input the code off the test strip tube into the machine. This is only repeated for each new tube of test strips.
Analysis
Because the blood sample is allowed to touch the test strip while it is in the glucose meter you don't need to do anything more except wait for the analysis. The analysis process begins once the test strip absorbs the blood and reacts with enzymes on the strip, according to California State University Northridge (CSUN). The reaction of the blood and enzymes are measured by the monitor to determine the level of glucose in your blood. Once the reaction is measured the monitor displays the result on the screen. If an error message occurs the sample must be collected again.
Results
Every diabetic has a specific target glucose range that has been discussed with their doctor. Some monitors may display a number in addition to the word "Low" or "High" to signify the blood results are not within the normal ranges. Some meters even allow you to program what your range should be and the monitor responds accordingly. This can be helpful in quickly assessing the glucose level. According to the National Institute of Health, normal results before meals are typically 70 to 130 milligrams per deciliter (mg/dL). After meals the results should be less than 180 mg/dL. This number refers to the quantity of sugar in the blood.
